400040231313 has 4 divisors (see below), whose sum is σ = 533386975088. Its totient is φ = 266693487540.

The previous prime is 400040231281. The next prime is 400040231317. The reversal of 400040231313 is 313132040004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400040231313 - 2⁵ = 400040231281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400040231313.

It is not an unprimeable number, because it can be changed into a prime (400040231317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66673371883 + ... + 66673371888.

It is an arithmetic number, because the mean of its divisors is an integer number (133346743772).

Almost surely, 2^400040231313 is an apocalyptic number.

It is an amenable number.

400040231313 is a deficient number, since it is larger than the sum of its proper divisors (133346743775).

400040231313 is a wasteful number, since it uses less digits than its factorization.

400040231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133346743774.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 400040231313 its reverse (313132040004), we get a palindrome (713172271317).

The spelling of 400040231313 in words is "four hundred billion, forty million, two hundred thirty-one thousand, three hundred thirteen".